On page 426 of your owners manual this is illustrated and described in detail. If you do not have your manual let me know
-Auto Tech Guy
To remove the spare tire:
1. Slide the front passenger's seat to the front- most lock position and the right side second seat to the rear- most lock position so they will not interfere with the wheel nut wrench. Open the right side sliding door and you will find the flap on the floor. Pull back the flap to find the spare tire clamp bolt.
picture of it